When I run the program built in release mode , having above code ,
the video file is played on Phonon::VideoWidget that is inserted into QStackedWidget but with dimensions not set by mine at the code above ( w , h ) but with source dimensions of the .avi file ( 640*480 for a case ) file.
And I get the following warning :
@
Warning: driver is sending image at 640x480@

Does anybody know what is the bug in changing playing video dimensions ?
Does anybody know how to change display video width , height in the Phonon::VideoWidget ?